Apparatus for forming paper containers



March 15, 1932.

E. C. ANGELL APPARATUS FOR FORMING PAPER CONTAINERS Filed Nov 10. 1930 3 Sheets-Sheet,

INVENTOR Effleflrzgell ATTORNEY March 15, 1932.

E. C. ANGELL APPARATUS FOR FORMING PAPER CONTAINERS Filed Nov 10. 1930 3 Sheets-Sheet 2 v March 15, 1932. E. c. Ab l GELL 1,849,861

APPARATUS FOR FORMING PAPER CONTAINERS Filed Nov 10. 1930 3 Sheets-Sheet 3 \1 i II I 66 '4 'flmfigggag 575 3 "=3 '5 I 1 4 I O7 58 A.

i I i -|Ih'- 5 66 ggi 0 so 17 I I I I 8 ATTORNEY Patented Mar. 15, 1932 I T OFF-ICE r nnwmno. menu, on NE YORK, N-Y.

APPARATUS FOR FORMING PAPER CONTAINERS Application filed November 10, 1980. Serial 110. 494,566.

This invention relates to a machine for forming receptacles or containers out of paper, in which a blank is formed into a body of a tubular shape, and thereupon a bottom of 6' paper is produced and inserted in one'end of the body, and the edges of the bottom and body are rolled or spun to secure the bottom in place.

The object of this invention is to provide an improved means for wrapping or folding the blank around a forming mandrel, in

which a previously gummed margin of the blank will be moistened and caused, to lap to produce a tight joint.

A further object of the invention is to pro vide improved folding means that will engage the blank at two places on each of the opposite sides of the mandrel.

Another object of the invention is to provide improved means for moistening the gummed edge of the blank, as it has been fed over from a pile beneath the mandrel and above the folders.

1 In the accompanying drawings showing embodiments of my invention,.

Figure 1 is a plan view partly in section.

Fig. 2 is a section on the line 22 of Fig. 1.

Fig. 3 is a front elevation. i

' Fig. 4 shows a section on the line 44 of 1 Fig. 1.

Fig. 5 is a View of the parts shown in Fig.v 4 in another position.

Fig. 6 is a sectional view of device. 9

As shown in thedrawings the mechanism the moistening is mounted on a suitable base or bed plate 2,

and at the rear is a main driving shaft 3 continuously rotated by suitable means. The mandrel 4 is shown of a frusto-conical shape, supported at its larger end only by a standard 5 mounted on the base 2, so that the mandrel will overhang the base. and permit the paper blank or form to be fed across below the mandrel, extending equally onv opposite sides thereof. Thereupon a pair of folders, one on each side, located normally below the mandrel, are raised to engage the blank and move it upwardly and fold it around the mandrel, with the upper edges lapped.

The folding means are in duplicate on each side of the mandred 4 and each comprises the following. In suitable guides .6 and 7 in the bed 2 slide plungers 8 and 9 vertically, that are connected at their lower ends by a yoke 10. These parts are reciprocated at intermit- 55 tent periods by a swinging lever 11 fulcrumed at 12 and rocked by a plunger 13 from a cam 14 on the main shaft 3. The plunger 8 has a bar 15 hinged to its upper end, which bar 1 carries a cross arm 16 that is pivoted to swing 60 both horizontally and vertically, to accommodate its engagement with the conical mandrel 4. The bar 15 also carries a roller 17 that is I pressed against an upright guide bar 18 by a coil spring 19 at the hinged connection of the o5 bar, which spring will swin the bar toward the mandrel and cause the re ler to engage the guide bar 18 as the bar and plunger 8 are raised from the lowermost osition indicated in Fig. 3. But when the p unger is raised so 7 that the roller 17 passes above the guide 18, the bar 15 will be free to be swung against the mandrel, and these parts are so arranged that this will occur when the'eross arm 16 is oppo- I site the middle portion of the mandrel. The 7 plunger 9 carries :a bar 20 hinged thereto with a crossarm- 21 at the top, and a roller 22 on the bar 20 is pressed by a spring 23 against a guide 24, WhlCh parts are substantially identical with those just described. But it will so be observed from Fig. 2 that-the cross arm 21 in the lower normal position is slightly elevated above the cross arm 16, the latter being opposite the smaller end of the tapering mandrel.

On the opposite side of the mandrel these parts are in duplicate and identical with the folders just described. A lever 25 like lever 11 will raise a yoke 26 that carries plungers 27 and 28. The latter having bars 29 and 30 pivoted'thereon, with rollers 31 and 32 that engage guides'33, 34 through springs 35, 36, and which bars carry cross arms, 37, 38 that correspond with the cross arms 16 and 21 on the opposite side. These cross arms are ar-' ranged similar to the others with the arm 37 slightly above the arm 38 in the lowermost position. The timing of the cam for the lever 25 on this side of the machine. and the relative parts, is such that the cross bars 37 and cross bars on the opposite side, that will result in the blank on this side being folded down across the top of the mandrel previous to the blank edge on theopposite side being folded down, which operation is indlcated 111 Fig. 4.

. The blank 39 is fed over from a support at 40, see Fig. 1, to a position below the mandrel and on top of the four folder arms 16, 21, 37 and 38, by a feeding arm 41, actuated from the main shaft in propertimed relation to the operation of the folders. In this class of machines it is usual to have a plunger below the blank that is fed over to this position,-raised to press the blank against the lowermost part i of the mandrel. As shown a plunger 42 slides in a guide "43 in the frame and is raised by a suitable lever 44 and cam at 45 on the main shaft, which takes place immediately after the blank has been fed. The feed arm 41 slides in a guide 67 on the bed plate 2 and carries a rack bar 68 on its lower face engaged by a gear 69. The latter carries a gear 70 engaging a gear 71, which gear by its attached gear 72 is driven from a se ment gear 73. This segment carries an arm 4 with a roller 75 that moves in a cam slot 76 on a cam 77. This cam is fixed on a cross shaft 7 8, driven from the main shaft 3 by angle gears 79 and 80. This cam will serveto reciprocate the feed arm 41 in timed relation to the other parts. The feed arm carries a fixed jaw 81 and a movable jaw '82 normally closed by spring 83. A stop'arm 84 on the movable jaw will engage a stop '85 to open the jaws to take a blank. At the other limit of the movement a stop 86 will serve to open the jaws to release the blank.

With this class of machines it is also customary, as soon as the blank is lapped at its margins on top of the mandrel, to bring a plunger down to press the lapped edgestogether, which edges are provided with a suitable adhesive. A plunger 46 is carried by a lever 47 in suitable guides, that is shown intermittently operated from a cam 48 on a cross shaft 49, the latter being rotated through a chain 50 and gearing from the main shaft 3. p I

The blanks 39 used in this machine are preferably provided with a coating of adhesive on one margin as at 51, and which must be mois tened prior to this margin being lapped on the othermargin at the top of the mandrel by the folders. As shown I provide a moistening roll 52 mounted at one end in a guide 53, and its other end engaging a shaft54 by a universal joint 55 by which the roller 52 is turned. The shaft 54 carries a ratchet wheel 56 engaged by a pawl 57 on an arm 58 mounted on the rockin' lever 11, see Fig. 2.' This roll 52 is prefera ly heated, and may be sup-- plied with steam through .pipe 59. Above the roll- 52'is an elongated frame 87 that is chambered and of segment form in section,

der the mandrel, so'that as the blank is'raised by the folders to wrap it around the mandrel, the gummed edge will be pressed against the roll as shown in Fig. 4. This roll is intermittently turned a short distance by the mechanism just described, to present another surface to the blank at each operation of the folders. The turning of the roll will present a fresh surface to the steam jets, and thus the face of the roll will receive a coatingof moisture that is removed as each blank is fed and pressed against the lower face of the roll.

After the blank has been wrapped around the mandrel and the lapped margins sealed by the plunger '46, it is removed from the mandrel by a suitable ejector, two bars 60 and 61 suitably guided in the frameand fast to a yoke 62, are advanced from a lever 63 and link 64, the lever being swung by an arm 65 from a cam 66 on the main shaft 3.

What I claim is 1. In a paper container machine, means for forming a frusto-conical body comprising a tapering mandrel, a pair of folders in duplicate at each side of themandreheach folder' being in two sections extending longitudinally of the mandrel, means for supporting the folders normally below the mandrel on each side to permit feeding of the form above the folders, means for raising the folders to engage the form and press it upwardly on each side against the mandrel to bring the sides of the form to lap at the top of the mandrel, each folder section being hinged longitudinally of the mandrel, a spring at the hinge connection tending to swing the folder toward the mandrel axis, and a guide for each folder whereby when initially raised from the lowermost position'it will'move u ward substantially in the vertical plane of t e side face of the mandrel to cause the form to be wraped around the lower half of the mandrelon each side, said folder and guide upon pressing the form against the mandrel at the middle side portion thereupon disengaging to permit the spring hinge to causethe folder to move inwardly to press the form against the mandrel during the remainder of the upward movement. I v

2. In a paper container machine, means for forming a frusto-conical body comprising a tapering mandrel, a pair of folders in dupli cate at each side of the mandrel, each-folder being in two sections; extending longitudinally of the mandrel, means for supporting the folders normally below the mandrel on each side to permit feeding of the form above the folders, means for raising the folders to engage the form and press it upwardly on each side against the mandrel to brin the sides of the form to lap at the top the mandrel, each folder section being hinged longitudinally of the mandrel, a spring at the hinge connection tending to swing the folder toward the mandrel axis, and a guide for each folder whereby when initially raised from the lowermost position it will move'upward substantially in the verticalplane of the side face of the mandrel to cause the form to be wrapped around the lower half of themandrel on .each side, said folder and guide upon pressing the form against the mandrel at the middle side portion thereupon disengaging to permit the spring hinge to cause the folder to move inwardly to press the form against the mandrel during the remainder of the upward movement, the bars on one side moving up in advance of the bars on the other side.

3. In a paper container machine, means for forming afrustc-conical body comprising a tapering mandrel, a pair of folders on each side of the mandrel, each folder comprising a yoke, a driving member, means connected with the driving member to move the yoke up and down at intermittent periods, a pair of upright plungers carried by the yoke, a bar pivoted at the .upper end of each plunger to swing toward and from the mandrel, a cross arm at the uper end of each bar, a spring at the hinge connection of each bar with the plunger tending to move the bar and arm toward the mandrel, a roller carried by each bar, and an upright guide against which the roller is pressed for the initial u ward movement of the bars and cross arms y the spring whereby the cross bars will raise a form that has been fedbelow the mandrel on the bars and wrap it around the lower half of the mandrel and directly press the form against the mandrel at the middle side portion, the said guide upon continued raisin of the cross bars leaving the bars and arms ree to be pressed by the spring against the u per curved face of the mandrel to wrap the lank around the mandrel.

forming a frusto-conical body comprising a tapering mandrel, a pair of folders in duplicate on each side of'the mandrel, each folder comprising a yoke, a driving member, means connected with the driving member to move.

the yokeup and down at intermittent periods, a air of upright plungers carried by the yo 'e, a bar pivotedat the upper end of each plungerto swing toward and from the manbar, and an upright guide against which the rolleris pressed for the initial upward movement of thebars and cross arms by the springs 4. In a paper container machine, means for whereby the has been fed below the mandrel on the bars and wrap it around the lower half, of the mandrel and directly press the form against the ,means connected with t e driving member to move the yoke up and down at intermittent eriods, a pair of upright plungers carried y the yoke, a bar pivoted at the upper end of each plunger to swingtoward an from the mandrel, a cross arm pivoted at the upper end of each bar to swing in two directions, a spring at the hinge connection of each bar with the plunger tending to move the bar and arm toward the mandrel, a roller cross bars will raise a form that i carried by each bar, and an upright guide against which the roller is pressed for the initial upward movement of the bars and cross arms" by the springs whereby the cross bars will raise a form that has been fed below the mandrel on the bars and wrap it around the lower half of the mandrel and directly press the form against the mandrel at the middle side portion, the said guide upon continued raising of the cross bars leaving the bars and arms free to be pressed by thesprin against the upper curved face of the mandre to wrap theblank around the mandrel, the

bars on one side moving up in advance of the bars on the other side.

6. In a paper container machine, the combination of means for forming a frusto-conical body including a tapering mandrel, folders located on each side normally held below the mandrel, means for feeding blanks successively from a pile on a support beyond the mandrel'over to a. position elow the mandrel and above the folders, and meansfor thereupon causing the folders to wrap the blank aroundthe mandrel with the margins lapping, a moistening device that is posie tioned a short distance above the rear margm of the blank when it has been 'fed across said ineans belowthe mandrel and above t e folders, which device when the blank is raised by the folders will be wiped by the rear previously giimmed margin of the blank, whereby to cause adhesion of the lapped margins when the blank is wrapped around the mandrel. I

7. In a paper container machine, the com-. bination of-means for forming a frusto-con'ical'body including a tapering mandrel, folders located on each side normally held below the mandrel, means for feedi'ng bla'nk s sucllli cessively from a pile on a support beyond the mandrel over to a position below the mandrel and above the folders, and means for thereupon causing the folders to wrap the blank around the mandrel with the margins lapping, a moistening device that is positioned a short distance above the rear margin of the blank when it has been fed across by said means below the mandrel and above the folders, which device when the blank is raised by the folders will be wiped b the rear previously gummed margins o the blank, whereby to cause adhesion of the lapped margins when the blank is wrapped around the mandrel, and means for supplying steam to moisten the gummed margin of the blank.

8. In a paper container machine, the combination of means for forming a frusto-conical body including a tapering mandrel, f0ld ers located on each side normally held below the mandrel, means for feeding blanks successively from a pile on a support beyond the mandrel over to a position below the mandrel and above the folders, and means for thereupon causing the folders to wrap the blankaround the mandrel with the margins lapping, a moistening device that is posi: tioned a short distance above the rear margin of the blank when it has beenfed across y said means below the mandrel and above the folders, which device when the blank is raised by the folders will be wiped b the rear previously gummed margins o the blank, whereby to cause adhesion of the lapped margins when the blank iswrapped around the mandrel, and means for intermittently turning the moistening member to present a fresh surface to successive blanks.

9. In a paper container machine, the combination of means for forminga frusto-conithe mandrel over to a cal body including a tapering mandrel, folders located on each side normally held below the mandrel, means for feeding blanks successively from a pile on a support beyond osition below "the mandrel and above. the olders, and means for thereupon causing the folders to wrap the blank around the mandrel with the margins lapping, a moistening device that is positioned a short distance above the rear margin of the blank when it has been fed across by said'means below the mandrel and above the folders, which device when the blank is raised by the folders will be wiped by the rear previously gummed margin of the blank, whereby to cause adhesion of the lapped margins when the blank is wrapped around the mandrel, said means comprising a roll, an elongated chamber frame extending a short dis tance above the top of the roll'with openings in its lower wall arranged to eject steam supplied to' the chamber onto the roll.

10. Ina aper container machine, the combination 0 means for forming a frusto-coni- I cal body including a tapering mandrel, foldlapping, a moistening device that is positioned a short distance above the rear marin of the blank when it-has been fed across y said means below the mandrel and above the folders, which device when the blank is raised by the folders will be wiped by the rear previously gummed margin 0 the-blank, whereby to cause adhesion of the lapped margins when-the blank is wrapped around the mandrel, said means comprising a roll, an elongated chamber frame extending a short distance above the top of the roll with openings in its lower wall arranged to eject steam supplied to the chamber onto the roll, and means for intermittently turning the roll to present a fresh surface to successive blanks and also to present successive parts of the roll to the apertured steam chamber.

Signed at New York city, N. Y, on August EDWARD C. ANGELL. 

